关于not until部分倒装我在看关于部分倒装的教程时看到：“当not until引出主从复合句,主句倒装,从句不倒装.”不太理解,可以造个句子给我讲解下吗.

not until he explained it to me ,did I know the truth.

典型例题
1) Why can't I smoke here?
At no time___ in the meeting-room
A. is smoking permitted B. smoking is permitted
C. smoking is it permitted D. does smoking permit
答案A. 这是一个倒装问题。当否定词语置于句首以表示强调时，其句中的主谓须用倒装结构。 这些否定词包括no, little, hardly, seldom, never, not only, not until等。本题的正常语序是 Smoking is permitted in the meeting-room at no time.
2） Not until the early years of the 19th century ___ what heat is.
A. man did know B. man know C. didn't man know D. did man know
答案D. 看到Not until…的句型，我们知道为一倒装句，答案在C，D 中选一个。
改写为正常语序为，Man did not know what heat is until the early years of the 19th. 现在将not提前，后面就不能再用否定了,否则意思就变了。

Not until I saw the score did I realize I hadn't work hard.
直到我看到分数,我才意识到自己没有努力学习
I realized I hadn't work hard是主句,倒装就成了did I realize ...
Not until I saw the score 是状语从句,不用倒装